英语每日一练

　　In this section, there are four passages followed by questions or unfinished statements, each with four suggested answers A, B, C and D. Choose the best answer and mark your answer on the Answer Sheet.

　　The American public’s obsession with dieting has led to one of the most dangerous health misconceptions of all times. Many television ads, movies, magazine articles, and diet-food product labels would have consumers believe that carbohydrates (碳水化合物) are bad for the human body and that those who eat them will quickly become overweight. We are advised to avoid foods such as potatoes, rice and white bread and opt for meats and vegetables instead. Some companies promote this idea to encourage consumers to buy their “carb-free” food products. But the truth is, the human body needs carbohydrates to function properly, and a body that relies on carbohydrates but is exhausted of this dietary element is not in good shape after all.

　　Most foods that we consume on a daily basis like potatoes and rice are loaded with carbohydrates. Contrary to popular belief, carbohydrates have many health benefits some fight diseases such as high blood pressure and heart disease, and others help to prevent cancer and stroke. Cutting these foods out of your diet may deprive your body of the many health benefits of carbohydrates.

　　One of the best benefits of carbohydrates is their ability to help to maintain the health of our organs, tissues, and cells. Scientific studies have shown that one type of carbohydrate called fiber reduces the risk of heart disease. Carbohydrates also contain antioxidants (抗氧化剂) , which protect the body’s cells from harmful particles with the potential to cause cancer.

　　This does not mean that the human body can survive on a diet composed entirely of carbohydrates. We also need certain percentages of proteins and fats to maintain healthy bodies. But carbohydrates certainly should not be avoided altogether. In fact, the food pyramid, the recommended basis of a healthy diet, shows that a person should consume six to eleven servings of breads and grains, as well as three to four servings each of fruits and vegetables - all carbohydrate-containing foods. It is easy to see why cutting carbohydrates out of a person’s diet is not a good idea.

　　The only way to know what is truly healthy for your own body is to talk to a nutritionist or dietician, who can help you choose foods that are right for you as well as guide you toward a proper exercise program for weight loss, or muscle gain. These professionals will never tell you to cut out carbohydrates entirely! The bottom line: listen to the experts, not the advertisers!

　　1. As is used in Paragraph l, the word “exhausted” most possibly means______.

　　A. startled

　　B. starving

　　C. derived

　　D. deprived

　　2. According to the author, advertisers who sell “carb-free”products_______.

　　A. value consumers’ well-being

　　B. are not telling the truth

　　C. offer healthy options

　　D. are responsible for obesity

　　3. Which of the following is NOT one of the health benefits of carbohydrates?

　　A. Prevention of stroke.

　　B. Prevention of cancer.

　　C. Prevention of fiber reduction.

　　D. Prevention of heart disease.

　　4. It can be inferred from the passage that a healthy diet _____.

　　A. is low in carbohydrates and high in proteins and fats

　　B. contains equal amounts of carbohydrates and proteins

　　C. needs enough proteins but no fat for us to maintain energy

　　D. is balanced between carbohydrates, and proteins and fats

　　5. The main purpose of the passage is to ____.

　　A. describe the variety of carbohydrates

　　B. explain how to live a healthy life

　　C. promote more physical exercise

　　D. advocate a healthy diet

　　———————————————————

　　正确答案

　　1.【答案】D

　　【考点】词意辨析

　　【解析】 在第一段，“exhausted”这个词的意思是什么?

　　原文中的意思是如果耗尽了这种饮食物质，是对人塑身没有好处的。因此选D.项“被剥夺的，失去的”符合题意。

　　【误项排除】A项“震惊的”、B项“饥饿的”、 C项“衍生的，导出的”不符合题意。

　　2.【答案】B

　　【考点】细节理解

　　【解析】 作者认为那些无碳产品的广告商们的看法是怎样的?

　　从文章的第一段，But the truth is, the human body needs carbohydrates to function properly, 我们可以分析出：广告商们提倡人们吃无碳水化合物食品，说对减肥塑身有益，但事实并非如此，因此可推断出，广告商们并没有讲出实情。因此正确答案为B项“没有讲出实情”。

　　【误项排除】A项“考虑消费者利益”、 C 项“提供健康选择”与文章的内容不符; D项“对肥胖负有责任”在文章中没有提及。

　　3.【答案】C

　　【考点】细节分析

　　【解析】 下面那一项不是碳水化合物所产生的健康益处?

　　在第二段中，除了C项“防止纤维的减少”，其他都提到了。

　　【误项排除】A项“防止中风”、B 项“预防癌症”、D项“预防心脏病”均与题意不符。

　　4.【答案】D

　　【考点】细节推断

　　【解析】 从文章中可以推断出健康饮食是怎样的?

　　从文章第四段，“ We also need certain percentages of proteins and fats to maintain healthy bodies. But carbohydrates certainly should not be avoided altogether.” 由此我们可以推断出，健康饮食，需要各物质之间的平衡。此题选D项 “碳水化合物、蛋白质、脂肪之间的平衡”。

　　【误项排除】 A项“碳水化合物含量比较低但蛋白质和脂肪含量较高”、 B 项“包含等量的碳水化合物和蛋白质”、C 项“需要足够的蛋白质，但不需要脂肪来保持我们的能量充足”都与作者观点不符。

　　5.【答案】D

　　【考点】写作目的

　　【解析】 此篇文章的写作目的是什么?

　　作者从开篇指出健康饮食的错误概念，到后边提出正确的饮食方式，其目的是为了倡导健康的饮食方式。因此选D项“倡导健康饮食”。

　　【误项排除】A项“描述了不同种类的碳水化合物”，文中只提到了碳水化合物的概念，并没有说到其种类。 B项“解释如何过健康的生活”，由于健康包含很多方面，文章中只讲了饮食方面的健康，因此B选项内容过于宽泛。C项“加强体育锻炼”在文章中没有提到。